Preparation of improved mixed vanadium phosphorus oxide...

Details Preparation of improved mixed vanadium phosphorus oxide... Preparation of improved mixed vanadium phosphorus oxide...

B - Operations, Transporting

01

J

252/99, 260/365.

B01J 23/22 (2006.01) B01J 27/18 (2006.01) B01J 27/198 (2006.01) C07C 51/215 (2006.01) C07C 51/25 (2006.01) C07D 307/60 (2006.01)

Patent

CA 1185959

ABSTRACT Vanadium phosphorus mixed oxide containing cacalysts are prepared in an organic liquid reaction medium with heating wherein at least 1.5 moles organic liquid are removed from the reaction medium such as by distillation for each mole of vanadium which is reduced or reacted during such reaction and/or reduction. The resulting catalysts are useful for the production of maleic anhydride from 4 carbon atom hydrocarbons.

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